package com.ali.util;

import java.util.concurrent.TimeUnit;

import javax.annotation.PostConstruct;

import org.redisson.api.RLock;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import com.ali.redis.DistributedLocker;

/**
 * redis分布式锁帮助类
 * @author nning_l@163.com
 * @date 2020年4月10日
 */
@Component
public class RedisLockUtil {

	@Autowired
	private DistributedLocker locker;
	
	private static DistributedLocker distributedLocker;
	
	@PostConstruct
	private void init() {
		distributedLocker = locker;
	}
	
	/**
	 * 加锁
	 * @param lockKey
	 * @return
	 */
	public static RLock lock(String lockKey) {
		return distributedLocker.lock(lockKey);
	}
	
	/**
	 * 释放锁
     * @param lockKey
     */
    public static void unlock(String lockKey) {
        distributedLocker.unlock(lockKey);
    }
    
    /**
     * 释放锁
     * @param lock
     */
    public static void unlock(RLock lock) {
        distributedLocker.unlock(lock);
    }
    
    /**
     * 带超时的锁
     * @param lockKey
     * @param timeout 超时时间   单位：秒
     */
    public static RLock lock(String lockKey, int timeout) {
        return distributedLocker.lock(lockKey, timeout);
    }
    
    /**
     * 带超时的锁
     * @param lockKey
     * @param unit 时间单位
     * @param timeout 超时时间
     */
    public static RLock lock(String lockKey, int timeout,TimeUnit unit ) {
        return distributedLocker.lock(lockKey, unit, timeout);
    }
    
    /**
     * 尝试获取锁
     * @param lockKey
     * @param waitTime 最多等待时间
     * @param leaseTime 上锁后自动释放锁时间
     * @return
     */
    public static boolean tryLock(String lockKey, int waitTime, int leaseTime) {
        return distributedLocker.tryLock(lockKey, TimeUnit.SECONDS, waitTime, leaseTime);
    }
    
    /**
     * 尝试获取锁
     * @param lockKey
     * @param unit 时间单位
     * @param waitTime 最多等待时间
     * @param leaseTime 上锁后自动释放锁时间
     * @return
     */
    public static boolean tryLock(String lockKey, TimeUnit unit, int waitTime, int leaseTime) {
        return distributedLocker.tryLock(lockKey, unit, waitTime, leaseTime);
    }
}
